baber/WOPTO huggingface dataset:
Patent KR-20030057311-A (KR)
IPC: G11B5/64
Filed: 2002-12-12
Abstract: 본 발명은 뒤붙임층 및 기록층으로부터의 누설 자계의 영향을 억제하고, 매체 노이즈를 저감할 수 있는 수직 자기 기록 매체를 제공하는 것을 과제로 한다. 
     수직 자기 기록 매체로서, 기판과, 기판 위에 설치된 연자성 뒤붙임층과, 뒤붙임층 위에 설치된 수직 자기 이방성을 갖는 자기 기록층과, 자기 기록층 위에 설치된 페리자성을 갖는 누설 자계 제어층을 포함하고 있다.  누설 자계 제어층이 자기 기록층과 반강자성적 또는 페리적으로 교환 결합함으로써, 뒤붙임층 및 자기 기록층으로부터의 누설 자계의 영향을 완화하고, 매체 노이즈의 저감을 도모할 수 있다.
Patent KR-20030053450-A (KR)
Inventor: MORIKAWA YOSUKE
IPC: G03G5/147
Filed: 2002-12-21
Abstract: PURPOSE: Provided are an electrophotographic photosensitive member, having on a conductive support at least a charge generation layer, a charge transport layer and a protective layer in this order, and a process cartridge and an electrophotographic apparatus using the electrophotographic photosensitive member. CONSTITUTION: The electrophotographic photosensitive member includes a photosensitive layer and a protective layer laminated in this order on a conductive substrate. The surface of the electrophotographic photosensitive member is charged to -700 V and irradiated with white light in a light quantity of 10 lux.sec under a 23 deg. C./5% RH environment. Also, Vsl(0.2), which is a surface potential of the electrophotographic photosensitive member at the time 0.2 seconds have passed from the irradiation, satisfies the specific conditions and the difference between the Vsl(0.2) and Vsl(0.5), which is a surface potential of the electrophotographic photosensitive member at the time 0.5 seconds have passed from the irradiation, satisfies specific conditions.
Patent KR-20030057337-A (KR)
IPC: H01L27/108
Filed: 2002-12-24
Abstract: 본 발명은 정밀도 양호하게 용량값을 측정할 수 있는 CBCM용 회로를 가지는 반도체장치를 얻는다. CBCM용 회로를 구성하는 MOS트랜지스터는 이하의 구조를 가진다. 즉, 몸체영역(16)의 표면 내에 선택적으로 소스·드레인영역(4, 4')가 형성되어, 서로 대향하는 소스·드레인영역(4, 4')의 첨단부에서 연장되어 연장영역(5, 5')가 각각 형성된다. 연장영역(5, 5')를 포함한 소스·드레인영역(4, 4')사이 위에 게이트절연막(7)이 형성되어, 게이트절연막(7) 위에 게이트전극(8)이 형성된다. 
     단, 채널영역의 불순물 농도보다도 높은 기존 구조의 포켓영역(6, 6')에 해당하는 영역은 연장영역(5, 5')의 첨단부 및 연장영역(5)의 주변부에 형성되지 않는다.
Patent KR-20040056761-A (KR)
Title: holl M/C
Inventor: KWAK TAE OK
IPC: B26D1/143
Filed: 2002-12-24
Abstract: PURPOSE: A device for cutting holes with a circular rack is provided to reduce working time and improve working efficiency by automatically cutting holes. CONSTITUTION: X-axis and y-axis feed units(30) are installed at a support frame(10) having magnets(12). A circular rack(20) moves along the x-axis and y-axis feed units. A guide roller is in contact with the inner circumference of the circular rack. A length control unit is installed at a fixing unit(52) for fixing the guide roller, and has a holder(62). A torch(70) is installed at the length control unit, and moves along the circular rack by a motor(80) contacted with the outer circumference of the circular rack.
Patent KR-20040058627-A (KR)
Title: System for inverter driving of LCD backlight
Inventor: CHOI JAE SUN
IPC: G02F1/13357
Filed: 2002-12-27
Abstract: PURPOSE: A backlight inverter driving system for an LCD(Liquid Crystal Display) is provided to enhance a transient response relating to the variance of the input voltage by using a frequency control and a duty control to a feedforward control and a feedback control. CONSTITUTION: An inverter circuit unit(100) includes switching devices(M1,M2,M3,M4) constructed by MOSFET, a capacitor(C1), an inductor(L1), a transformer(120). A control signal supply unit(200) includes an error amplifier and a capacitor(C3). The error amplifier includes an inversion terminal for receiving feedback voltage which is transferred to a load through a resonance tank(110) in input voltage(Vin) and a non-inversion terminal for receiving reference voltage for feedback. The capacitor(C3) is connected with an output stage and the non-inversion terminal of the error amplifier. A control unit(300) uses all a duty control and a frequency control to a feed forward and a feedback control. An input stage of an oscillator(310) for generating a synchronization signal is connected to the control signal supply unit(200) and an output stage of the oscillator(310) is connected to a control logic unit(340) and a comparing unit(330).
Patent KR-20040058878-A (KR)
Title: Quail egg packing recepatacle
Inventor: LEE ZAE HEON
IPC: B65D85/32
Filed: 2002-12-27
Abstract: PURPOSE: A packing container for quail egg is provided to enable packing of fixed quantity and automatic packing by standardizing the container, prevent the quail egg from being damaged by shock during distribution, and extend distributive period by letting or circulating the external air in the container. CONSTITUTION: The packing container for quail egg repeatedly forms quail egg holding grooves(12,22) and projected walls(14,24) in sequence and also forms a main plate(10) and a cover plate(20) by inter-corresponded shape. Each holding groove(12,22) has supplementary ribs(12a,22a) everywhere. Also the holding grooves(12,22) are connected each other by air flowing grooves(13). A ventilating opening(22b) is placed at the end side of the holding groove(22) on the cover plate(20). Supplementary grooves(15,25) are formed at the external circumferential side of the main plate(10) and the cover plate(20) along the inner plate. Air inflowing grooves(16,26) are formed by being connected with the supplementary grooves(15,25) to inflow the external air into the internal of each holding groove(12,22) by a predetermined interval.
Patent KR-20040062043-A (KR)
Title: Apparatus for sharing memory in a vcr/dvdp composite product
Inventor: KWON O IL
IPC: G11B20/10
Filed: 2002-12-31
Abstract: PURPOSE: A device for sharing a memory in a VCR/DVDP(DVD Player) complex product is provided to share one memory between a microcomputer for a VCR and a microcomputer for a DVDP, without using individual memories, thereby reducing costs caused by plural memories. CONSTITUTION: An EEPROM(1) stores various data for a VCR, and stores various data for a DVDP. A microcomputer(2) for the VCR reads necessary information from the EEPROM(1), and controls operations of each unit, so that a function requested by a user can be performed in the VCR. A microcomputer(3) for the DVDP receives the necessary information from the EEPROM(1) through communication with the microcomputer(2) for the VCR, and controls operations of each unit, so that a function requested by the user can be performed in the DVDP.
Patent KR-20020062730-A (KR)
IPC: H01M8/24
Filed: 2001-02-08
Abstract: 파형금속판으로 이루어지는 복수의 도전성 세퍼레이터판, 상기 세퍼레이터판 사이에 삽입된 전해질막-전극접합체로서, 둘레가장자리부가 가스킷으로 피복된 수소이온 전도성 고분자전해질막, 상기 전해질막의 한쪽 면에 접합된 양극, 및 상기 전해질막의 다른 쪽 면에 접합된 음극으로 이루어지는 전해질막-전극접합체, 및 상기 양극 및 음극에 각각 연료가스 및 산화제가스를 공급ㆍ배출하는 가스공급ㆍ배출수단을 구비하고, 상기 가스공급ㆍ배출수단이, 상기 파형금속판의 한쪽 면의 홈을 통하여 양극에 연료가스를 공급ㆍ배출하고, 상기 파형금속판의 다른 쪽 면의 홈을 통하여 음극에 산화제가스를 공급ㆍ배출하는 고분자전해질형 연료전지.
Patent KR-20020060962-A (KR)
IPC: H04L12/10
Filed: 2000-10-26
Abstract: 본 발명에 따라서, 라인 전력 공급식 케이블 모뎀 가입자 유닛들(16)을 지원하는 IP 전화통신 분배 시스템(10)상의 전력 소모를 최소화하기 위해 전력 관리 시스템이 제공된다. 패킷 전화통신 시스템의 전력 절감 기술은 경보 큐(60)를 사용한다. 경보 큐(60)가 설정되고, 선택적 활성화를 위한 복수의 페이즈들로 세그먼트화되며, 각 페이즈는 케이블 모뎀 터미네이션 시스템(CMTS; 28)을 통해 통신되는 패킷 전화통신 정보를 버퍼링하기 위한 메모리 버퍼들을 가지고 있다. 다수의 케이블 모뎀 가입자 유닛들(16, 18)은 복수의 경보 페이즈 그룹들로 분할되고, 각 경보 페이즈 그룹은 경보 큐의 복수의 페이즈들 중 하나와 연관된다. 그후, 제어 정보의 전송을 위해 가입자 유닛들(16, 18)과 CMTS(28) 사이에 VBC(62)가 제공될 수 있다.
Patent KR-20020089494-A (KR)
Title: 금속 이온 킬레이트 착물이 포합된 담즙산 유도체의미세혈관 투과성 진단 평가를 위한 용도
IPC: A61K49/08
Filed: 2001-04-17
Abstract: 미세혈관 투과성의 평가를 위한 진단 조영 조성물 제조를 위한, 분자량이 5000 달톤 미만이며 하나 이상의 담즙산 잔기를 포함하는 조영제의 용도가 개시된다.
Patent KR-20030004367-A (KR)
IPC: A61H19/00
Filed: 2001-04-25
Abstract: 성행위시에 여성 성기도 자극하여 성적 쾌감을 부여하는 성감체 자극 링을 제공한다. 성감체 자극 링(10)은 실리콘 고무로 만든 안쪽 링(12)과 바깥 링(14)으로 이루어진다. 양 링(12, 14) 모두 단면이 거의 U자 형상으로 형성되며, U자의 선단에는 육후부(16, 20)가 형성되어 있다. 성교시에는 성감체 자극 링(10)이 양측으로부터 압압되어 변형하며, 육후부(20)가 여성 성기의 외음부에 접촉하여 자극한다. 또한 안쪽 링(12)의 링 지름 방향 안쪽에, 링 지름 방향 안쪽을 향해서 팽창할 수 있는 속이 빈 구조체(40)가 부착되어 있다. 속이 빈 구조체(40)를 팽창시킴으로써, 발기 보조 기구를 이용하여 발기 상태로 된 음경의 근원을 죄고, 유입한 혈액의 흐름을 저지하여 음경을 울혈 상태로 유지할 수 있다.
Patent KR-20030004369-A (KR)
IPC: B67C3/00
Filed: 2001-04-06
Abstract: 본 발명은 회전 터릿(332)의 회전속도를 변화시키지 않고 회전 터릿 가열-씰링 기계의 처리량을 제어하기 위한 방법 및 장치에 관련된다. 인덱싱 클러치(324)는 정해진 개수의 씰링헤드만 공급된 캔을 씰링하기 위해 사용되도록 회전터릿에 캔(320)을 공급하기 위해 제어된다. 정해진 개수의 캔은 바람직한 처리율에 따라 계산된다. 지연시간, 온도, 압력은 캔의 처리량을 근본적으로 변화시키면서 일정하게 유지될 수 있다.
Patent KR-20030012876-A (KR)
IPC: A63F13/00
Filed: 2001-06-08
Abstract: 본 발명에 따른 한 명 또는 그 이상의 내기자들이 진행하는 내기 게임(wagering game)은, (a) 특정한 무작위 결과를 생성하는 무작위 결과 생성기; 및 (b) 나올 수 있는 복수의 무작위 결과에 대응하며 제1 내기돈(wager)이 놓여지는 제1 베팅존(betting zone)(20)과 제1 및 제2 결과에 대응하며 제2 내기돈이 놓여지는 제2 베팅존(30)을 포함하는 내기판(playing surface)(100)을 포함하고, 상기 나올 수 있는 복수의 무작위 결과가 상기 특정한 무작위 결과와 대조하기 위해 비교되고, 상기 특정한 무작위 결과를 미리 정해진 특정한 무작위 결과 또는 연속한 특정한 무작위 결과와 비교하여 상기 제1 또는 제2 결과를 결정한다.
Patent KR-20030010723-A (KR)
IPC: B29K75/00
Filed: 2001-06-07
Abstract: 본 발명은 실온캐스팅에 적합하고 실온경화시 고성능이고 수축이 적은 우레탄 엘라스토머를 생산하는 액체안정성 MDI 프리폴리머와 액체안정성 큐러티브계, 프리폴리머와 큐러티브, 엘라스토머 자체, 그리고 단일유니트 또는 키트로서 제공되는 별도포장의 프리폴리머 성분과 그 상보적인 큐러티브 성분에 관한 것이다
Patent KR-20040064353-A (KR)
Inventor: CHO DONG GYUE
IPC: A61M5/00
Filed: 2003-01-11
Abstract: PURPOSE: Provided are an adhering-type medical equipment for testing blood fluids and medication, thereby to support consumers higher quality of medical advantages by a system with various advantages, such as simplification of testing system, correct medication by a testing result, minimization of pain and infection by injector, and so on. CONSTITUTION: The adhering-type medical equipment includes the parts of a measuring apparatus, a controlling apparatus, and an injecting apparatus. The measuring apparatus measures measuring elements of blood, such as measuring of blood sugar, electrolyte, and melted oxygen amount at the same time, on the basis of its own clock therein with three measuring sensors therefor. The controlling apparatus estimates difference values between a reference value therein and the measuring value from the measuring apparatus, and makes an order to the injecting apparatus to inject medicinal liquid minimized for the difference values. The injecting apparatus inserts an injecting liquid into blood vessel or body according to the order from the controlling apparatus.
Patent KR-20040064397-A (KR)
Title: Functional flowerpot containing diet enzyme, herb medicines and functional materials
Inventor: SON YOUNG SUK
IPC: A01G9/02
Filed: 2003-01-11
Abstract: PURPOSE: A functional flowerpot containing diet enzyme, herb medicines and functional materials is provided, which emits far infrared rays and negative ions, stimulates immune system and lymph system to prevent and recover diseases, inhibits aging and improves immunity in animals and plants without side effects. CONSTITUTION: The method for preparing the functional flowerpot containing diet enzyme, herb medicines and functional materials comprises the steps of: fermenting a mixture of grains such as cowpea, oats, buckwheat, Chinese millet, rice, barley, job's tear, foxtail millet and bean, fruits such as apple and grape, carbohydrates such as potato, sweet potato, burdock, hemp, sugar, starch and arrowroot starch, and sugarcane, pulp and alcohol to prepare vinegar containing diet enzyme; mixing 100 kg of a mixture of functional materials containing herb medicines, described in page 3 with 100 kg of a fruit mixture of maesil(Japanese apricot), ginger, grape, banana, pear, pineapple, jujube, chestnut, apple, melon, watermelon, persimmon, apricot, peach and plum in a predetermined ratio and 100 kg of grains, inserting the mixture into a pot, and fermenting the mixture at 15 to 45 deg. C for 1 to 6 months to prepare 230 kg of functional materials; mixing the functional materials with the vinegar containing diet enzyme in a ratio of 93:17, adding 50 kg of water into the mixture and fermenting the mixture for 1 month or more to prepare 250 kg of fermented functional material juice; and adding the fermented functional material juice into the flowerpot to prepare the functional flowerpot containing diet enzyme, herb medicines and functional materials.
Patent KR-20040066591-A (KR)
Inventor: KIM JIN SU
IPC: F02D1/02
Filed: 2003-01-20
Abstract: PURPOSE: A slope road climb control device and method of a diesel vehicle is provided to prevent the diesel vehicle from rolling back when the diesel vehicle starts after stopping on a slope road by compensating for idle rpm(revolutions per minute) through idle fuel amount injection for desired rpm abstracted from an idle compensation map table according to each slope degree. CONSTITUTION: A slope road climb control device of a diesel vehicle comprises an engine rpm detection part(11) detecting the current engine rpm and outputting information about the detected current engine rpm; an accelerator pedal detection part(13) detecting displacement information of an accelerator pedal operated by a driver to control engine torque; a rail pressure detection part(15) detecting the fuel pressure in a common rail; a slope detection part(17) detecting a slope rate of a travel area; a suction air detection part(19) detecting the amount of suction air supercharged into a combustion chamber; a brake detection part(21) detecting drive displacement of a brake pedal; a speed range detection part(23) detecting the currently selected speed range; a control part(25) executing injection control by detecting the slope degree of the current spot if a departure condition is detected after a stop on a slope road and then abstracting the amount of fuel for the desired idle rpm followed by the slope degree from an idle compensation map table; and an injector(27) injecting the amount of fuel abstracted to each combustion chamber while the opening and shutting information of a nozzle is controlled according to a control signal applied from the control part.
Patent KR-20030014311-A (KR)
Title: Airtight structure of entrance in spout
Inventor: LEE JEONG MIN
IPC: B65D33/38
Filed: 2003-01-20
Abstract: PURPOSE: Provided is an airtight structure of an entrance in a spout which enables an airtight part to keep airtightness by the help of a stopper so that it keeps airtightness continuously, however some gaps are generated between the stooper and the entrance of the spout. CONSTITUTION: The airtight structure of the entrance in the spout is characterized by comprising the parts of: the entrance(4) which includes a switching stopper in an upward direction of the spout(1) including a combination part(2,3) to adhere to the vessel containing contents; a single sill(5) which is formed in the upper internal wall part of the entrance; and an elastic airtight part(6) which is unfolded in the downward direction to a certain degree.
Patent KR-20040069390-A (KR)
Inventor: BAEK SANG HO
IPC: B21B38/04
Filed: 2003-01-29
Abstract: PURPOSE: A method and an apparatus for measuring length of slab charged into reheating furnace using infrared laser sensors are provided to prevent increase of product cost and increase output by removing factors of utility cost increase in such a way that slab charging and extracting cycles are not changed even during front loading as well as side loading. CONSTITUTION: The apparatus for measuring length of slab comprises infrared laser sensors(61a,61b,61c,61d) for measuring a distance from the infrared laser sensors to the slab; an operation part(71) for calculating length of the slab by receiving the distance from the infrared laser sensors to the slab; a control part(72) for determining if length of the slab is within the error range from predetermined theoretic slab length; and an indication part(73) for indicating length of the slab, wherein the infrared laser sensors are installed diagonally to a roller table(1) and further comprise a plurality of sensors. The method for measuring length of slab comprises a step of transmitting theoretic slab length to control part from continuous casting plant; a step of selecting sensors to be used according to the theoretic slab length; a step of loading a slab to be measured on a roller table; a step of measuring a distance from the selected sensors to the slab; and a step of calculating length of the slab using distance data measured from the selected sensors to the slab.
Patent KR-20030067511-A (KR)
IPC: H04N1/32
Filed: 2003-02-04
Abstract: The process comprises the steps consisting in:   (a) receiving data in a first device, the data containing at least one anticopy protection system identifier; (b) verifying whether the first device is connected to a data recording device by a digital bus; and in case of positive verification: (c) verifying whether the first device comprises a module implementing an anticopy protection system whose identifier is included in the data; and in case of positive verification: (d) offering a user access to the data according to a first mode of access (PPVR) authorizing the recording of the data; and     in case of negative verification in step (b) or step (c): (e) offering a user access to the data according to a second mode of access (PPV) not authorizing the recording of the data.   <IMAGE>
Patent KR-20040072233-A (KR)
Inventor: CHOI JIN HYEON
IPC: H01J1/62
Filed: 2003-02-10
Abstract: PURPOSE: A display device is provided to control light luminescence by varying a white level of a data voltage provided to each EL(Electro-Luminescence) device. CONSTITUTION: A display panel(23) comprises a plurality of pixels arranged in a matrix, and a plurality of anodes corresponding to each pixel and a plurality of cathodes corresponding to each anode, and a plurality of EL devices comprised between the anodes and the cathodes and including a light emission layer, and a plurality of thin film transistors controlling current supply to the plurality of EL devices, and performs a display operation. A scan driver(21) selects each pixel line on the display panel selectively. A data driver(22) applies an RGB display signal corresponding to a corresponding pixel line whenever a pixel line of the display panel is selected. A display control part generates the RGB display signal compensating white balance of RGB data using a current value fed back from a common cathode of the display panel and the RGB data inputted from the external, and provides the generated RGB display signal to the data driver. The display control part generates a brightness control reference signal and controls brightness by controlling a white level of the RGB data according to the brightness control reference signal.
Patent KR-20040072857-A (KR)
Inventor: HAN DONG IL
IPC: H04N5/45
Filed: 2003-02-11
Abstract: PURPOSE: A device for generating multiple screens is provided to generate multiple screens by sharing a format converter without using another hardware for generating the multiple screens, thereby simplifying a hardware configuration and reducing costs. CONSTITUTION: A format converter(102) converts resolution of an image signal inputted according to a multiple-screen size signal. A write controller(103) stores the format-converted image signal in an outer memory through a memory interface(101) according to a storage position signal. A read controller(104) reads the image signal stored in the outer memory according to a canvas size signal through the memory interface(101), and outputs the read image signal.
Patent KR-20040078175-A (KR)
Inventor: KIM CHUL WON
IPC: G06Q99/00
Filed: 2003-03-03
Abstract: PURPOSE: A method for network marketing using a messenger program having a file sharing function and a computer-readable recording medium recording a program for the same are provided to overcome a geographic limit and reinforce the union, the mutual aid, or the mutual education between members through the online. CONSTITUTION: The members from the 2-level to the 'N+1' level are registered to a server by receiving recommendation from the member registered from the 1-level to the N-level. The messenger program is transmitted/installed to the registered member. The messenger program of the N-level transmits the opened personal information, the contact information, and a messenger ID of all members registered under the N-level, and is stored to each messenger program. The member requests article purchase and settles price through the server or the messenger program, and receives or delivers an article. The education data for the member under the N-level is transmitted to the member of the N-level.
Patent KR-20040082800-A (KR)
Inventor: KIM SANG U
IPC: F25D21/04
Filed: 2003-03-20
Abstract: PURPOSE: A kimchi refrigerator is provided to reduce power consumption by not using an electric heater for preventing condensation. CONSTITUTION: A main body(11) of a kimchi refrigerator has first and second storage compartments(12,14) at an upper area, and a machine chamber(20) at a rear area of a lower part. Storage compartment doors(15) are combined with the main body to open and shut the storage compartments. A compressor is installed in the machine chamber. A condenser is arranged at one side of the compressor. A hot line pipe part(27) has one side connected with an outflow of the condenser and the other side arranged at apertures of the storage compartments to prevent moisture of air from condensing at the apertures of the storage compartments.
Patent KR-20040088646-A (KR)
Inventor: KIM IN SU
IPC: F02M51/06
Filed: 2003-04-10
Abstract: PURPOSE: A fuel injector for a vehicle is provided to prevent fuel leakage and to improve performance and quality by uprightly lifting up and down an armature at the same position all the time and line-contacting wholly a ball valve and a core by a rotation-preventing device for restricting rotation of the armature intermitting the ball valve. CONSTITUTION: A fuel injector(30) for a vehicle is composed of a capsule body(33) combined at the upside of a body(31) and formed with a connector(32); a filter(34) embedded in the capsule body to remove foreign materials contained in the fuel; a tube(36) having a passage at the lower side of the filter and extending down to a pole piece(37); a solenoid(40) formed outside the lower side of the pole piece to generate magnetic force by receiving power from the connector; an armature(41) disposed at the lower side of the pole piece and lifted up and down by the solenoid; a core(42) fixed at the lower side of the armature to line-contact with an entire part of a ball valve(45); the ball valve disposed with a valve seat(48) having an injection hole(47) and intermitted by a valve body(46) combined to the lower end of the body; a spring(49) embedded between the tube and the armature to return the armature and closely contact the ball valve and the injection hole; and a rotation-preventing device disposed at a lower end of the pole piece and an upper end of the armature to restrict the rotation of the armature lifting up and down by the solenoid. The rotation-preventing device comprises a rotation-preventing projection and a rotation-preventing groove formed in a pair at the lower end of the pole piece and the upper end of the armature.
Patent KR-20040089188-A (KR)
Inventor: KIM HONG BEOM
IPC: G01R31/28
Filed: 2003-04-11
Abstract: PURPOSE: A semiconductor memory device capable of accessing all memory cells by a relative address method is provided to improve the productivity and to reduce the manufacturing cost by testing 4 number of memory devices at the same time. CONSTITUTION: A semiconductor memory device capable of accessing all memory cells by a relative address method includes a test device(10) and a plurality of integrated circuit devices(DUT1-DUT4). The test device(10) is provided with the M number of channels. The plurality of integrated circuit devices(DUT1-DUT4) is provided with the N number of channels to interface with outside, respectively. And, the M number of the channels of the test device(10) are connected to the K number of channels among the M number of channels in the integrated circuit devices(DUT1-DUT4) while the integrated circuit devices(DUT1-DUT4) are performs the test operation mode, wherein the N is smaller than M and is equal to or larger than R*K.